Press



No. 6l5,769'.' Patented Dec. l3, I898.

S. J. WEBB.

PRESS.

(Application filed. Feb. 12, 1897.) (No Model.) 3 Sheets-Sheet I.

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No 615,769. Patent ed nee ffi; i.-

s. J. WEBB.

PRESS.

(Application filed Feb. 12, 1897.) (No Model.) 3 Sheets-Sheet 2.

Patented Dec. I3, I898.

8. VJ. WEBB.

PRESS.

[Application filed Feb. 12, 1897.

3 Sheets-Sheet 3.

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YINITED STATES PATENT FFICE.

SAMUEL J. WEBB, OF MINDEN, LOUISIANA.

PRESS.

SPECIFICATION forming part of Letters Patent No. 615,769, dated December 13, 1898.

Application filed February 12, 1897. Serial No. 623,151. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL J .WEBB, a citizen of the United States, residing at Minden, Webster parish, State of Louisiana, have invented certain new and useful Improvements in Presses, of which the following is a specification.

My invention relates to baling-presses, and more especially to that class of baling-presses illustrated in Letters Patent granted to S. .I. and R. D. Webb, No. 539,496, dated May 21, 1895; and my invention consists of certain improvements whereby to simplify and strengthen the construction of the press, as fully described, and as illustrated in the ac companying drawings, in which- Figure 1 is an elevation of sufficient of a press to illustrate my invention; Fig. 2, an

enlarged detached view illustrating the levers in their lower positions. Fig. 3 isa view illustrating a modification with the levers in their upper position. Figs. 4 and 5 are views illustrating other modifications.

The press is provided with an upper stationary platen A, supported by standards 7, and with a movable platen B, which is guided upon said standards and which is carried to and from the stationary platen through the medium of connecting-rods 29 29, pivoted at 30 30 to the movable platen and also pivoted at 5 5 near one end of a lever 32, the opposite end of which is connected to the piston-rod 4. of an engine 5.

The platen A consists of part of a very heavy frame, which is extended at opposite sides to form two curved faces 00 m, affording bearings for the upper ends of the levers 32 32, so that as the piston-rod rises, carrying with it the levers, the ends of these levers will also slide and rock upon the faces a: w, the contact-points constituting the changing fulcra of the levers, and as the pivots 5 are adjacent to these fulcra and the long arms of the lever are very much longer than the distance between the fulcra and the pins 5 there is a proportionately very great leverage.

In this class of apparatus the parts in consequence of the enormous pressure to which the bales must be subjected are exceedingly heavy and strong. For instance, the pivotpins 5 5 in a press of ordinary dimensions will be at least sixteen inches in diameter and the other parts correspondingly proportioned. Heretofore it has been common in some instances to connect the ends of the levers 32 32 to links or arms, necessitating the use of additional pivot-pins adjacent to the pins 5, which thereby not only weaken the parts, but render necessary the employment of other pivots for the opposite ends of the links. This, further, in some cases prevents bringing the pivotal points of the links constituting the fulcra of the levers and the pins 5 as close together as described. In order to overcome these objections, I make use of the construction which I have described and illustrated, dispensing altogether with the links and their pivotal connections and providing bearings on which the bearings of the levers can rest to cause a shifting or change of the fulcra. The ends of the levers, as shown, are rounded; but this is not essential.

In order that I may bring the fulcrum of each lever as close as possible to the pin which connects the lever to the connectingrod 29, I place the pin to one side of the lever and as nearly as possible upon a line drawn through the fulcrum-point at the end of the lever and the center of the pin at the opposite end, which connects it to the piston-rod. Although this arrangement brings the pins 5 near to one edge of the lever the thickness of the latter (in'some cases over three or four feet) is sufficient to give the requisite strength, even with the periphery of the pin almost intersecting the adjacent face of the lever, and which may be cast thereon.

While the ends of the lever will slide and rock upon the face of the adjacent bearings w, it isdesirable in some cases to reduce the friction that would thus result, and this may be done by providing a movable bearing-face a3as, for instance, in Figs. 4. and 5, where the face a: is a part of a segment or arm 10, having trunnions 6, extending into the frame. In such case the end of the lever and segment may be provided with small teeth, pins, or cogs and with connecting-links 11, or a slot and pin, to make one move with the other, when the segment will rock with the lever as the latter approaches its upper position. Instead of vhaving a movable bearing-face, as described, however, the ends of the levers may have projecting pins which rest upon the bearing-faces or which are provided with rollers resting upon the bearing-face; but this arrangement is not so good as that illustrated in Fig. 1, because it does not permit the pivot-points and the fulcra to be brought so close together. It will be evident, however, that any suitable means of guidingthe ends of the lever nearest which the connecting-rods are pivoted may be employed.

As illustrated in Fig. 1, the connecting rods 29 are connected directly to the pivots 5; but this is not absolutely necessary, because advantage is derived in some instances in connecting the upper ends of the connecting-rods to links 13, Fig. 3, so that as the levers rise the pivots 5 will gradually be brought toward the vertical plane of the upper ends of links 13, with an accumulating leverage during the first part of the stroke and a uniform leverage during the latter part of the stroke, so that bales of different thicknesses may receive the same final pressure without any adjustments of parts. In order to support the links 13, they are connected at their upper ends by a connecting-rod 15. It will of course be evident that the said links 13 may be used whether the ends of the levers bear directly upon the bearing-surfaces w or whether they are connected to links, as in my aforesaid Letters Patent; but in this arrangement, as when the connecting-rods are connected directly to the pivots 5, there is an advantage from permitting the ends of the levers to have a direct bearing, as described.

W'ithont limiting myself to the precise construction and arrangement of parts shown and described, I claim as my invention 1. The combination with the movable platen and operating means of a press, of a lever having one end connected with the operating means and the other end having a curved edge bearing directly upon a fixed part of the frame, and links connecting the lever at a point between its fulcrum and the other end with the movable platen, substan tially as described.

2. A baling-press provided with a stationary and with a movable platen, an engine,

and levers connected each at one end with the engine having curved edges at their opposite ends, connecting-rods between the levers and the movable platen, and curved bearings for the curved edges of the levers, substantially as described.

3. The combination in a baling-press having a stationary and movable platen, engine, and levers, and connecting-rods between the levers and the movable platen, of a frame having curved bearing-faces, the said levers having ends projecting beyond the points of their connection with the connecting-rods, the said ends bearing directly upon the said bearing-faces, substantially as set forth.

4. The combination with the frame having bearing-faces, the platens, engine and levers connected with the engine and having shifting bearings on the bearing-faces of the frame, of connectingrods attached to the movable platen, and links each having one end pivoted to one of the levers and the other end to the connecting-rods, substantially as described.

5. The combination with the frame having bearing-faces, the platens, engine, levers connected to the engine. and bearing on said bearing-faces and a transverse connectingrod, of connecting-rods connected to the movable platen and the transverse connectingrod, and links each having one end pivoted to one of the levers, and the other end to the connecting-rods, substantially as described.

6. The combination with the frame having parts constituting movable bearings, the platens, engine and levers, of connecting-rods between the levers and movable platen, the said levers having ends projecting beyond the points of connection with the connectingrods, and rocking on the movable bearings, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAML. J. WEBB. Witnesses:

A. 1-1. GOODENOUGH,

CAMERON E. STRAUSS. 

